There are a lot of ways to introduce chinchillas. Some chins may never get a long, some get a long instantly, some take a little time. Best thing is to have a spare cage in case introductions don't take off right at first. I wouldn't recommend getting a male, unless you've done a lot of research about breeding first and know what you're getting into. With breeding can come a lot of responsibility. You're at a greater risk of troubles happening from breeding (c sections, breech births, hand feeding kits, fighting when the female is in heat, uterine infections, etc..etc...just examples of things that can happen when you choose to have opposite gendered chins and they may mate/may not.), than just having two same gendered chinchillas as a pair.
I personally find chinchillas DO like the company of another chinchilla. As far as introductions go, the best one by far that has worked 99% of the time for me, has been to introduce chins in a neutral room (a room that neither chinchilla has been in before and has no reason to assert dominance or territorial behavior in.). Usually in the early morning hours, and usually with a quick snip of the whiskers to just an inch in length on the chinchilla who is accustomed to living with you/in your home already. Putting a dust bath in the room and a toy or something for them to bond over/play with together, helps too.
Usually, I monitor the chinchillas for a couple hours this way, and if there is no fur pulling, no chasing, fighting, etc... I will place them in the cage together and monitor again for another hour or two to ensure all is well. If you see fur pulling, chasing, fighting, spraying, then it is best to separate and try another method. I only ever had to separate once using this method over the years, and it was an overly dominant male who wouldn't accept any chinchilla no matter what.
If that doesn't work, there is numerous other methods, but usually that one works incredibly well and is used by quite a few breeders I know for pairing up chinchillas.